Exercise bicycle



FIG. 1 is a rear, left, and top perspective view of an exercise bicycleembodying the new design;

FIG. 2 is a front, right, and bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The broken lines are shown for the purpose of illustrating portions ofthe exercise bicycle or portion thereof and/or environmental matter andform no part of the claimed design. The dot-dash broken lines define thebounds of the claimed design and form no part thereof.

CLAIM The ornamental design for an exercise bicycle, as shown anddescribed.